Finite-Element Analysis of Inclined Piezocone Penetration Test in Clays
Publication: International Journal of Geomechanics
Volume 5, Issue 3
Abstract
A three-dimensional finite-element analysis was performed to analyze the effect of soil anisotropy on the inclined piezocone penetration test in normally consolidated clay. The piezocone penetration was numerically simulated based on a large strain formulation using the commercial finite-element code ABAQUS, and the anisotropic modified cam clay model (AMCCM) was chosen and implemented into ABAQUS through the user subroutine UMAT. For verification purposes, numerical simulations were first performed on previously conducted calibration chamber tests, and the predicted results were compared with the measured values. For different initial stress conditions and different penetration angles, the cone tip resistance profile; excess pore pressure profile at the cone tip; typical stress, strain and excess pore pressure distributions around the cone; and excess pore pressure dissipation at the cone tip are provided. This study shows that when the initial stress state is anisotropic, the soil behavior is different under different angles of penetration.
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Acknowledgments
This study is based upon work supported by the National Science Foundation under Grant No. CMS-9907951. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the writers and do not necessarily reflect the views of the National Science Foundation. The access to the ABAQUS workstation at the Advanced Computational Solid Mechanics Lab in the Department of Civil and Environmental Engineering, Louisiana State University is gratefully acknowledged.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 5 • Issue 3 • September 2005
Pages: 167 - 178
Copyright
© 2005 ASCE.
History
Received: Jul 7, 2004
Accepted: Feb 1, 2005
Published online: Sep 1, 2005
Published in print: Sep 2005
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